<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0120-0011</journal-id>
<journal-title><![CDATA[Revista de la Facultad de Medicina]]></journal-title>
<abbrev-journal-title><![CDATA[rev.fac.med.]]></abbrev-journal-title>
<issn>0120-0011</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-00112022000100208</article-id>
<article-id pub-id-type="doi">10.15446/revfacmed.v70n1.91270</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Friends, physical activity, and sedentary behavior in university students: A social network analysis]]></article-title>
<article-title xml:lang="es"><![CDATA[Amigos, actividad física y comportamiento sedentario en estudiantes universitarios: un análisis de redes sociales]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arango-Paternina]]></surname>
<given-names><![CDATA[Carlos Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cardona-Gómez]]></surname>
<given-names><![CDATA[Jason]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arboleda-Serna]]></surname>
<given-names><![CDATA[Víctor Hugo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz-Rodríguez]]></surname>
<given-names><![CDATA[Diana Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Antioquia  ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad CES  ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2022</year>
</pub-date>
<volume>70</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-00112022000100208&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-00112022000100208&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-00112022000100208&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: Understanding the processes of socialization during youth and their association with healthy behaviors is crucial for university education.  Objective: To explore the associations of the characteristics of friendship networks with being physically active and having a sedentary behavior in university students.  Materials and methods: Cross-sectional study conducted in 475 university students and based on a social network analysis. Measurements included sociodemographic, physical activity, sedentary behavior, and friendship network variables. The associations between the characteristics of friendship networks and physical activity and sedentary behavior were explored using logistic regression models. Confidence intervals (95%) were estimated and a significance level of p&lt;0.05 was considered.  Results: In women, being part of at least a cluster of friends was significantly associated with being physically active (adjusted OR [aOR]: 2.3; 95%CI: 1.2-4.6), while being popular was significantly associated with a lower probability of being physically active (aOR: 0.3; 95%CI: 0.1-0.7). Also, a ten-percentage point increase in active friends was significantly associated with a higher probability of being physically active (aOR: 9.3; 95%CI: 3.5-24.6). Regarding sedentary behavior, a ten-percentage point increase in the number of sedentary friends was significantly associated with a higher probability of being sedentary (aOR: 5.5; 95%CI: 2.5-12.3). In men, none of the studied associations were statistically significant.  Conclusion: Some characteristics of social network are relevant for female university students in relation to their physical activity levels and sedentary behaviors. These findings highlight the need to consider friendship network dynamics for designing initiatives aimed at physical activity promotion and sedentary behavior reduction.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción. El entendimiento de los procesos de socialización durante la juventud y su relación con conductas saludables son cruciales para la educación universitaria.  Objetivo. Explorar las asociaciones de las características de la red social de amigos con ser físicamente activo y con tener un comportamiento sedentario en estudiantes universitarios.  Materiales y métodos. Estudio transversal, basado en un análisis de redes sociales, realizado en 475 estudiantes universitarios. Las mediciones realizadas incluyeron variables sociodemográficas, actividad física, conducta sedentaria y redes sociales de amigos. Las asociaciones entre las características de la red social de amigos con la actividad física y el comportamiento sedentario fueron exploradas mediante modelos de regresión logística. Se estimaron intervalos de confianza (95%) y se consideró un nivel de significancia de p&lt;0.05.  Resultados. En mujeres, ser parte de al menos un conglomerado de amigos se asoció significativamente con ser físicamente activa (OR ajustados: 2.3; IC95%: 1.2-4.6), mientras que ser popular se asoció significativamente con una menor probabilidad de ser físicamente activa (OR ajustados [aOR]: 0.3; IC95%: 0.1-0.7). Asimismo, un incremento de diez puntos porcentuales de amigos activos se asoció significativamente con una mayor probabilidad de ser físicamente activa (aOR: 9.3; IC95%: 3.5-24.6). En relación con el comportamiento sedentario, un incremento de diez puntos porcentuales de amigos sedentarios se asoció significativamente con una mayor probabilidad de ser sedentaria (aOR: 5.5; IC95%: 2.5-12.3). En hombres, ninguna de las asociaciones estudiadas fue estadísticamente significativa.  Conclusión. Algunas características de las redes sociales de amigos fueron relevantes para las estudiantes universitarias en relación a sus niveles de actividad física y comportamiento sedentario. Estos hallazgos resaltan la necesidad de considerar las dinámicas de las redes sociales de amigos en el diseño de iniciativas orientadas a la promoción de la actividad física y la reducción de conductas sedentarias.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Youth]]></kwd>
<kwd lng="en"><![CDATA[Friendship]]></kwd>
<kwd lng="en"><![CDATA[Social Networking]]></kwd>
<kwd lng="en"><![CDATA[Exercise (MeSH)]]></kwd>
<kwd lng="es"><![CDATA[Juventud]]></kwd>
<kwd lng="es"><![CDATA[Amistad]]></kwd>
<kwd lng="es"><![CDATA[Redes sociales]]></kwd>
<kwd lng="es"><![CDATA[Ejercicio (DeCS)]]></kwd>
</kwd-group>
</article-meta>
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